/*
 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this list of
 * conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
 * of conditions and the following disclaimer in the documentation and/or other materials
 * provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 * to endorse or promote products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "It_posix_container.h"
using namespace std;
#define STACK_SIZE (1024 * 1024)    /* Stack size for cloned child */
#define CHILD_FUNC_ARG (0x2088)

static const char *containerType = "ipc";
struct shared_use_st{
    char test[1024];
};

static int childFunc1(void *arg) {
    struct shared_use_st *shared;
    const char testBuf[] = "child test shm";
    int ret;

    int shmid = shmget((key_t)1234, sizeof(struct shared_use_st), 0666|IPC_CREAT);
    ICUNIT_ASSERT_NOT_EQUAL(shmid, -1, shmid);

    void *shm = shmat(shmid, 0, 0);
    ICUNIT_GOTO_NOT_EQUAL(shm, (void *)-1, shm, EXIT);
    shared = (struct shared_use_st *)shm;
    ret = strncmp(shared->test, testBuf, strlen(testBuf));
    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);

    ret = shmdt(shm);
    ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT);

    return 0;

EXIT:
    shmdt(shm);
    return 0;
}

static int childFunc(void *arg) {
    struct shared_use_st *shared;
    const char testBuf[] = "parent test shm";
    const char testBuf1[] = "child test shm";
    int ret;
    int status;
    int pid;
    int exitCode;
    char *stack = (char*)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
    char *stackTop = stack + STACK_SIZE;
    auto linkBuffer = readlink_container(getpid(), containerType);

    int shmid = shmget((key_t)1234, sizeof(struct shared_use_st), 0666|IPC_CREAT);
    ICUNIT_ASSERT_NOT_EQUAL(shmid, -1, shmid);

    void *shm = shmat(shmid, 0, 0);
    ICUNIT_GOTO_NOT_EQUAL(shm, (void *)-1, shm, EXIT);

    shared = (struct shared_use_st *)shm;
    ret = strncmp(shared->test, testBuf, strlen(testBuf));
    ICUNIT_GOTO_NOT_EQUAL(ret, 0, ret, EXIT);

    ret = memcpy_s(shared->test, sizeof(struct shared_use_st), testBuf1, sizeof(testBuf1));
    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);

    pid = clone(childFunc1, stackTop, SIGCHLD, &arg);
    ICUNIT_GOTO_NOT_EQUAL(pid, -1, pid, EXIT);

    ret = waitpid(pid, &status, 0);
    ICUNIT_GOTO_EQUAL(ret, pid, ret, EXIT);

    ret = WIFEXITED(status);
    ICUNIT_GOTO_NOT_EQUAL(ret, 0, ret, EXIT);

    exitCode = WEXITSTATUS(status);
    ICUNIT_GOTO_EQUAL(exitCode, 0, exitCode, EXIT);

    ret = shmdt(shm);
    ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT);

    ret = shmctl(shmid, IPC_RMID, 0);
    ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT);

    return 0;

EXIT:
    shmdt(shm);
    shmctl(shmid, IPC_RMID, 0);
    return 0;
}

static UINT32 Testcase(VOID)
{
    int ret;
    int status;
    struct shared_use_st *shared;
    const char testBuf[] = "parent test shm";
    int pid;
    int exitCode;
    struct shmid_ds ds = {};
    struct shminfo info = {};

    int arg = CHILD_FUNC_ARG;
    char *stack = (char*)mmap(NULL, STACK_SIZE, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
    char *stackTop = stack + STACK_SIZE;

    int shmid = shmget((key_t)1234, sizeof(struct shared_use_st), 0666|IPC_CREAT);
    ICUNIT_ASSERT_NOT_EQUAL(shmid, -1, shmid);

    void *shm = shmat(shmid, 0, 0);
    ICUNIT_GOTO_NOT_EQUAL(shm, (void *)-1, shm, EXIT);
    ICUNIT_ASSERT_NOT_EQUAL(shm, (void *)-1, shm);

    shared = (struct shared_use_st *)shm;
    ret = memcpy_s(shared->test, sizeof(struct shared_use_st), testBuf, sizeof(testBuf));
    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);

    pid = clone(childFunc, stackTop, CLONE_NEWIPC | SIGCHLD, &arg);
    ICUNIT_GOTO_NOT_EQUAL(pid, -1, pid, EXIT);

    ret = waitpid(pid, &status, 0);
    ICUNIT_GOTO_EQUAL(ret, pid, ret, EXIT);

    ret = WIFEXITED(status);
    ICUNIT_GOTO_NOT_EQUAL(ret, 0, ret, EXIT);

    exitCode = WEXITSTATUS(status);
    ICUNIT_GOTO_EQUAL(exitCode, 0, exitCode, EXIT);

    ret = shmctl(shmid, IPC_STAT, &ds);
    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);
    ICUNIT_GOTO_EQUAL(ds.shm_segsz, PAGE_SIZE, ds.shm_segsz, EXIT);
    ICUNIT_GOTO_EQUAL(ds.shm_nattch, 1, ds.shm_nattch, EXIT);
    ICUNIT_GOTO_EQUAL(ds.shm_cpid, getpid(), ds.shm_cpid, EXIT);
    ICUNIT_GOTO_EQUAL(ds.shm_lpid, getpid(), ds.shm_lpid, EXIT);
    ICUNIT_GOTO_EQUAL(ds.shm_perm.uid, getuid(), ds.shm_perm.uid, EXIT);

    ret = shmctl(shmid, SHM_STAT, &ds);
    ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT);
    ICUNIT_GOTO_NOT_EQUAL(ret, 0, ret, EXIT);

    ds.shm_perm.uid = getuid();
    ds.shm_perm.gid = getgid();
    ds.shm_perm.mode = 0;
    ret = shmctl(shmid, IPC_SET, &ds);
    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);

    ret = shmctl(shmid, IPC_INFO, (struct shmid_ds *)&info);
    ICUNIT_GOTO_EQUAL(ret, 192, ret, EXIT);
    ICUNIT_GOTO_EQUAL(info.shmmax, 0x1000000, info.shmmax, EXIT);
    ICUNIT_GOTO_EQUAL(info.shmmin, 1, info.shmmin, EXIT);
    ICUNIT_GOTO_EQUAL(info.shmmni, 192, info.shmmni, EXIT);
    ICUNIT_GOTO_EQUAL(info.shmseg, 128, info.shmseg, EXIT);
    ICUNIT_GOTO_EQUAL(info.shmall, 0x1000, info.shmall, EXIT);

    ret = shmdt(shm);
    ICUNIT_GOTO_NOT_EQUAL(ret, -1, ret, EXIT);

    ret = shmctl(shmid, IPC_RMID, NULL);
    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT);

    return 0;

EXIT:
    shmdt(shm);
    shmctl(shmid, IPC_RMID, 0);
    return 0;
}

VOID ItPosixContainerIpcShmClone001(void)
{
    TEST_ADD_CASE("IT_POSIX_CONTAINER_IPC_SHM_CLONE_001", Testcase, TEST_POSIX, TEST_CONTAINER, TEST_LEVEL0, TEST_FUNCTION);
}

